Letter from the Angel in the Cherry Blossom Sky

Under a blue sky where cherry blossoms dance in the spring breeze, a blue-haired angel with wings spreads out, smiling from a floating castle. She is the messenger of a letter from a distant fantasy world. This 84-yen stamp holds a secret adventure. Her green eyes tell of daily life in the kingdom above the clouds and a gentle invitation to humans on the ground. Do you have the courage to open this letter and dive into an unknown story?